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| author |   Andre Przywara <andre.przywara@arm.com> | 2020-03-24 13:23:38 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-03-24 16:33:04 -0700 |
| commit | e7fea0b9d09e2f7d32776f5198192dfc2572a5b9 (patch) | |
| tree | eac737f44e00e6c169ef95795517213aa8fede1c /ipc/sem.c | |
| parent | net: axienet: Fix DMA descriptor cleanup path (diff) | |
| download | wireguard-linux-e7fea0b9d09e2f7d32776f5198192dfc2572a5b9.tar.xz wireguard-linux-e7fea0b9d09e2f7d32776f5198192dfc2572a5b9.zip | |
net: axienet: Improve DMA error handling
Since 0 is a valid DMA address, we cannot use the physical address to
check whether a TX descriptor is valid and is holding a DMA mapping.
Use the "cntrl" member of the descriptor to make this decision, as it
contains at least the length of the buffer, so 0 points to an
uninitialised buffer.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'ipc/sem.c')
0 files changed, 0 insertions, 0 deletions